package site.wtcc.originalfavor.func.utils;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

/**
 * @author 01182919 caofang
 * @Date 2019/12/11 9:30.
 * @since 0.0.1
 */
public class Md5Utils {
    private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5","6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
    /**
     * 输入原文 返回MD5码
     *
     * @param key
     * @return
     */
    public static String getMd5Key(String key) {
        try {
            MessageDigest md5 = MessageDigest.getInstance("MD5");
            String result = "";
            byte[] temp;
            temp = md5.digest(key.getBytes());
            for (int i = 0; i < temp.length; i++) {
                result += Integer.toHexString(
                        (0x000000ff & temp[i]) | 0xffffff00).substring(6);
            }
            return result;
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static byte[] getMd5Key(byte[] buffer, byte[] key) {
        try {
            MessageDigest md5 = MessageDigest.getInstance("MD5");
            md5.update(buffer);
            return md5.digest(key);
        } catch (NoSuchAlgorithmException e) {
        }
        return null;
    }
    //中远
    public static String code32(String origin, String charset) {
        String resultString = null;
        try {
            resultString = new String(origin);
            MessageDigest md = MessageDigest.getInstance("MD5");
            if (charset == null) {
                resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
            } else {
                resultString = byteArrayToHexString(md.digest(resultString.getBytes(charset)));
            }
        } catch (Exception exception) {
        }
        return resultString;
    }

    private static String byteArrayToHexString(byte b[]) {
        StringBuffer resultSb = new StringBuffer();
        for (int i = 0; i < b.length; i++){
            resultSb.append(byteToHexString(b[i]));
        }
        return resultSb.toString();
    }
    private static String byteToHexString(byte b) {
        int n = b;
        if (n < 0) {
            n += 256;
        }
        int d1 = n / 16;
        int d2 = n % 16;
        return hexDigits[d1] + hexDigits[d2];
    }

    public static void main(String [] args){
        String signStr = "CNCN" + "ukUY3#t#5XcAryuokrNy8C5Alb@Cp1SX";
        String sign = Md5Utils.code32(signStr, "utf-8");
        System.out.print(sign);
    }
}

